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[1]GAO Chuanyou.Research on Photosynthetic Characteristics of Common Palmae Plants in Nanning City[J].Research of Soil and Water Conservation,2016,23(02):183-188,193.

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Research on Photosynthetic Characteristics of Common Palmae Plants in Nanning City

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 02 Page number: 183-188,193 Column: Public date: 2016-04-28

Title:: Research on Photosynthetic Characteristics of Common Palmae Plants in Nanning City

Author(s):: GAO Chuanyou; Guangxi Vocational and Technical College, Nanning 530226, China

Keywords:: Nanning City; common Palmae plants; photosynthetic characteristics

CLC:: S792

DOI:: -

Abstract:: Photosynthetic characteristics, physiological property and the main influence factors of common Palmae plants (Rhapis Excelsa, Livistona chinensis and Areca catechu) were investigated comparatively in Nanning City. The results showed that: (1) the plant heights, stem diameters and crown breadths of different Palmae plants decreased in the order: Areca catechux > Livistona chinensis > Areca catechu, leaf area indexes and specific leaf weights decreased in the order: Livistona chinensis > Areca catechu > Rhapis excelsa, pH levels of the root zone soil decreased in the order: Rhapis excelsa > Areca catechu > Rhapis excelsa, and the nutrient contents of the root zone soil decreased in the order: Livistona chinensis > Areca catechu > Rhapis excelsa with local fluctuation, and there was no significant difference of soil organic carbon in common Palmae plants (p > 0.05); (2) the light saturation point (LSP), light compensation point (LCP), apparent assets (AQY), carboxylation efficiency (CE), stomatal limitation (L_s), water use efficiency (WUE), nitrogen use efficiency (NUE) and phosphorus use efficiency (PUE) of three common Palmae plants decreased in the order: Livistona chinensis > Areca catechu > Rhapis excelsa with local fluctuation, which there was no significant difference of Ls of common Palmae plants (p > 0.05), and this variation tendency was the same as the root zone soil nutrients; (3) the responsive curves of photosynthesis in three kinds of Palmae plants to the change of photosynthetic rate (P_n), transpiration rate (EVAP), stomatal conductance (G_s), intercellular CO₂ concentration (C_i) with the Livistona chinensis was the highest and the Rhapis excelsa was the lowest, while stomatal limitation resulted in different levels of photosynthetic ‘lunch break’ phenomenon, and transpiration rate (EVAP), stomatal conductance (G_s), intercellular CO₂ concentration (C_i) of three kinds of Palmae plants showed the W-shape; (4) the change of photosynthetic active radiation (PAR), CO₂ concentration and air temperature of three kinds of Palmae plants could be described with quadratic equations (P<0.001); (5) correlation analysis showed that photosynthetic characteristics and physiological properties of Palmae plants were determined by a variety of environmental factors, and these factors could be influenced each other, and among these environmental factors, the absolute value of correlation coefficient of G_s was the greatest.

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